Your topic "backwards compatibility mode after removing the watermark" and your thread doesn't really state whats wrong, I am guessing backwards compatibility is not working correctly, can you provide more details. Eg, what programs it happens with etc.
when you use a patch that removes the watermark your backwards compatibility breaks, and so you cant use it with any program. Also it cant be fixed by restoring the files using backups (it would restore the watermark only) yeah looks like that's the only way. I just did a clean install and kept the watermark T.T